Tag Number Estimation Based on Loaded Quality Factor of Reader Antenna

In the scenario of inventorying densely stacked tags, there exists an important problem of initial frame length selection in Radio Frequency Identification (RFID) dynamic frame slot anti-collision algorithm, a loaded quality factor tag number estimation method based on high-power high-frequency reader antenna is proposed, which can avoid the problem of improper initial frame length setting of anti-collision algorithm, and effectively enhance the inventory efficiency of high-frequency RFID system.